diff --git a/src/extension.js b/src/extension.js
index 91a8f4a..9ad54c0 100644
--- a/src/extension.js
+++ b/src/extension.js
@@ -836,7 +836,7 @@ const WeatherMenuButton = new Lang.Class({
 
 	toCelsius: function(t)
 	{
-	return String(Math.round((Number(t)-32)*0.555556));
+	return String(Math.round((Number(t)-32)/1.8));
 	},
 
 	toKelvin: function(t)